"If we do not change course quickly, we will inevitably encounter an incident where that first domino is tipped—triggering a sequence of unstoppable events that will mark the end of our time on this tiny planet... What if 100m or more people marched around the world in protest at what it is we now see: the ineptitude, selfishness, the cruelties and the threats to our collective well-being? ...it might just deliver a sort of shock therapy to those dangerous or useless politicians who now threaten humanity."